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Cover Page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2019
Feb. 21, 2020
Jun. 30, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 001-10410    
Entity Registrant Name CAESARS ENTERTAINMENT CORPORATION    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 62-1411755    
Entity Address, Address Line One One Caesars Palace Drive    
Entity Address, City or Town Las Vegas    
Entity Address, State or Province NV    
Entity Address, Postal Zip Code 89109    
City Area Code 702    
Local Phone Number 407-6000    
Title of 12(b) Security Common stock, $0.01 par value    
Trading Symbol CZR    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 6.8
Entity Common Stock, Shares Outstanding   682,268,726  
Documents Incorporated by Reference
Portions of the Registrant’s definitive Proxy Statement for our 2020 Annual Meeting of Stockholders are incorporated by reference into Part III of this Form 10-K, provided that if the Registrant does not file such Proxy Statement on or before April 29, 2020, such information will be included in an amendment to this Form 10-K filed on or before such date.
    
Amendment Flag false    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2019    
Entity Central Index Key 0000858339    
Current Fiscal Year End Date --12-31